 /*******************************************************************************
  * Copyright (c) 2004, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.presentations;

 import java.util.Arrays ;
 import java.util.LinkedList ;
 import java.util.List ;

 import org.eclipse.jface.action.Action;
 import org.eclipse.ui.internal.WorkbenchMessages;
 import org.eclipse.ui.presentations.IPresentablePart;
 import org.eclipse.ui.presentations.IStackPresentationSite;

 public class SystemMenuCloseOthers extends Action implements
         ISelfUpdatingAction {

     private IStackPresentationSite stackPresentation;
     private IPresentablePart current;

     public SystemMenuCloseOthers(IStackPresentationSite stackPresentation) {
         this.stackPresentation = stackPresentation;
         setText(WorkbenchMessages.PartPane_closeOthers);
     }

     public void dispose() {
         stackPresentation = null;
     }

     public void run() {
         List others = new LinkedList ();
         others.addAll(Arrays.asList(stackPresentation.getPartList()));
         others.remove(current);
         stackPresentation.close((IPresentablePart[]) others
                 .toArray(new IPresentablePart[others.size()]));
     }

     public void update() {
         setTarget(stackPresentation.getSelectedPart());
     }

     public boolean shouldBeVisible() {
         return true;
     }

     /**
      * @param currentSelection
      * @since 3.1
      */
     public void setTarget(IPresentablePart current) {
         this.current = current;
         setEnabled(current != null &&
                 stackPresentation.getPartList().length > 1);
     }
 }

